mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-09-19 22:30:05 +00:00
c424594625
- changed the main OPENSUBDIV_INCLUDE_DIR to exclude ./opensubdiv
- updated CMakeLists.txt files in non-examples to use only this path
- updated CMakeLists.txt files in examples to append ./opensubdiv to path
- updated source in regression/common to use #include <opensubdiv/...>
- updated source in examples/common to use #include <opensubdiv/...>
- deferred source in examples to be updated on a case-by-case basis
233 lines
7.9 KiB
C++
233 lines
7.9 KiB
C++
//
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// Copyright 2013 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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#include "d3d11PtexMipmapTexture.h"
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#include "ptexMipmapTextureLoader.h"
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#include <opensubdiv/far/error.h> // XXX: to be replaced
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#include <D3D11.h>
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#include <cassert>
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D3D11PtexMipmapTexture::D3D11PtexMipmapTexture()
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: _width(0), _height(0), _depth(0),
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_layout(0), _texels(0),
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_layoutSRV(0), _texelsSRV(0),
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_memoryUsage(0)
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{
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}
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D3D11PtexMipmapTexture::~D3D11PtexMipmapTexture()
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{
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if (_layout) _layout->Release();
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if (_layoutSRV) _layoutSRV->Release();
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if (_texels) _texels->Release();
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if (_texelsSRV) _texelsSRV->Release();
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}
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/*static*/
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const char *
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D3D11PtexMipmapTexture::GetShaderSource()
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{
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static const char *ptexShaderSource =
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#include "hlslPtexCommon.gen.h"
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;
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return ptexShaderSource;
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}
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static ID3D11Buffer *
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genTextureBuffer(ID3D11DeviceContext *deviceContext, int size, void const * data) {
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D3D11_BUFFER_DESC hBufferDesc;
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hBufferDesc.ByteWidth = size;
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hBufferDesc.Usage = D3D11_USAGE_DYNAMIC;
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hBufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER | D3D11_BIND_SHADER_RESOURCE;
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hBufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
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hBufferDesc.MiscFlags = 0;
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hBufferDesc.StructureByteStride = sizeof(float);
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HRESULT hr;
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ID3D11Buffer *buffer;
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ID3D11Device *device;
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deviceContext->GetDevice(&device);
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hr = device->CreateBuffer(&hBufferDesc, NULL, &buffer);
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if (FAILED(hr)) {
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OpenSubdiv::Far::Error(OpenSubdiv::Far::FAR_RUNTIME_ERROR,
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"Fail in CreateBuffer\n");
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return 0;
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}
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D3D11_MAPPED_SUBRESOURCE resource;
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hr = deviceContext->Map(buffer, 0,
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D3D11_MAP_WRITE_DISCARD, 0, &resource);
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if (FAILED(hr)) {
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OpenSubdiv::Far::Error(OpenSubdiv::Far::FAR_RUNTIME_ERROR,
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"Fail in Map buffer\n");
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buffer->Release();
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return 0;
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}
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memcpy(resource.pData, data, size);
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deviceContext->Unmap(buffer, 0);
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return buffer;
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}
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D3D11PtexMipmapTexture *
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D3D11PtexMipmapTexture::Create(ID3D11DeviceContext *deviceContext,
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PtexTexture * reader,
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int maxLevels,
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size_t targetMemory) {
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D3D11PtexMipmapTexture * result = NULL;
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int maxNumPages = D3D10_REQ_TEXTURE2D_ARRAY_AXIS_DIMENSION;
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// Read the ptex data and pack the texels
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bool padAlpha = reader->numChannels()==3 && reader->dataType()!=Ptex::dt_float;
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PtexMipmapTextureLoader loader(reader,
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maxNumPages,
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maxLevels,
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targetMemory,
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true, // seamlessMipmap
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padAlpha);
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int numChannels = reader->numChannels() + padAlpha,
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numFaces = loader.GetNumFaces();
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ID3D11Buffer *layout = genTextureBuffer(deviceContext,
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numFaces * 6 * sizeof(short),
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loader.GetLayoutBuffer());
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if (!layout) return NULL;
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DXGI_FORMAT format = DXGI_FORMAT_UNKNOWN;
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int bpp = 0;
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switch (reader->dataType()) {
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case Ptex::dt_uint16:
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switch (numChannels) {
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case 1: format = DXGI_FORMAT_R16_UINT; break;
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case 2: format = DXGI_FORMAT_R16G16_UINT; break;
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case 3: assert(false); break;
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case 4: format = DXGI_FORMAT_R16G16B16A16_UINT; break;
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}
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bpp = numChannels * 2;
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break;
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case Ptex::dt_float:
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switch (numChannels) {
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case 1: format = DXGI_FORMAT_R32_FLOAT; break;
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case 2: format = DXGI_FORMAT_R32G32_FLOAT; break;
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case 3: format = DXGI_FORMAT_R32G32B32_FLOAT; break;
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case 4: format = DXGI_FORMAT_R32G32B32A32_FLOAT; break;
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}
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bpp = numChannels * 4;
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break;
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case Ptex::dt_half:
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switch (numChannels) {
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case 1: format = DXGI_FORMAT_R16_FLOAT; break;
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case 2: format = DXGI_FORMAT_R16G16_FLOAT; break;
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case 3: assert(false); break;
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case 4: format = DXGI_FORMAT_R16G16B16A16_FLOAT; break;
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}
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bpp = numChannels * 2;
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break;
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default:
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switch (numChannels) {
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case 1: format = DXGI_FORMAT_R8_UNORM; break;
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case 2: format = DXGI_FORMAT_R8G8_UNORM; break;
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case 3: assert(false); break;
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case 4: format = DXGI_FORMAT_R8G8B8A8_UNORM; break;
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}
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bpp = numChannels;
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break;
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}
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// actual texels texture array
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D3D11_TEXTURE2D_DESC desc;
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desc.Width = loader.GetPageWidth();
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desc.Height = loader.GetPageHeight();
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desc.MipLevels = 1;
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desc.ArraySize = loader.GetNumPages();
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desc.Format = format;
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desc.SampleDesc.Count = 1;
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desc.SampleDesc.Quality = 0;
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desc.Usage = D3D11_USAGE_DEFAULT;
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desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
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desc.CPUAccessFlags = 0;
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desc.MiscFlags = 0;
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D3D11_SUBRESOURCE_DATA *initData = new D3D11_SUBRESOURCE_DATA[desc.ArraySize];
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int pageStride = loader.GetPageWidth()*loader.GetPageHeight() * bpp;
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for (unsigned int i = 0; i < desc.ArraySize; ++i) {
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initData[i].pSysMem = loader.GetTexelBuffer() + i * pageStride;
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initData[i].SysMemPitch = loader.GetPageWidth() * bpp;
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initData[i].SysMemSlicePitch = pageStride;
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}
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ID3D11Device *device;
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ID3D11Texture2D *texels;
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deviceContext->GetDevice(&device);
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HRESULT hr = device->CreateTexture2D(&desc, initData, &texels);
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if (FAILED(hr)) return NULL;
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delete[] initData;
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// create SRV
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ID3D11ShaderResourceView *layoutSRV;
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D3D11_SHADER_RESOURCE_VIEW_DESC srvd;
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ZeroMemory(&srvd, sizeof(srvd));
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srvd.Format = DXGI_FORMAT_R16_UINT;
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srvd.ViewDimension = D3D11_SRV_DIMENSION_BUFFER;
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srvd.Buffer.FirstElement = 0;
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srvd.Buffer.NumElements = numFaces * 6;
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hr = device->CreateShaderResourceView(layout, &srvd, &layoutSRV);
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if (FAILED(hr)) return NULL;
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ID3D11ShaderResourceView *texelsSRV;
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ZeroMemory(&srvd, sizeof(srvd));
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srvd.Format = format;
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srvd.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2DARRAY;
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srvd.Texture2DArray.MipLevels = 1;
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srvd.Texture2DArray.ArraySize = desc.ArraySize;
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hr = device->CreateShaderResourceView(texels, &srvd, &texelsSRV);
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if (FAILED(hr)) return NULL;
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result = new D3D11PtexMipmapTexture;
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result->_width = loader.GetPageWidth();
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result->_height = loader.GetPageHeight();
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result->_depth = loader.GetNumPages();
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result->_format = format;
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result->_layout = layout;
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result->_texels = texels;
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result->_layoutSRV = layoutSRV;
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result->_texelsSRV = texelsSRV;
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result->_memoryUsage = loader.GetMemoryUsage();
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return result;
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}
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